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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | CONFORMING TO | BUGS | SEE ALSO | COLOPHON |
GETW(3) Linux Programmer's Manual GETW(3)
getw, putw - input and output of words (ints)
#include <stdio.h>
int getw(FILE *stream);
int putw(int w, FILE *stream);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
getw(), putw():
Since glibc 2.3.3:
_XOPEN_SOURCE && ! (_POSIX_C_SOURCE >= 200112L)
|| /* Glibc since 2.19: */ _DEFAULT_SOURCE
|| /* Glibc versions <= 2.19: */ _BSD_SOURCE ||
_SVID_SOURCE
Before glibc 2.3.3:
_SVID_SOURCE || _BSD_SOURCE || _XOPEN_SOURCE
getw() reads a word (that is, an int) from stream. It's provided for
compatibility with SVr4. We recommend you use fread(3) instead.
putw() writes the word w (that is, an int) to stream. It is provided
for compatibility with SVr4, but we recommend you use fwrite(3)
instead.
Normally, getw() returns the word read, and putw() returns 0. On
error, they return EOF.
For an explanation of the terms used in this section, see
attributes(7).
┌───────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├───────────────┼───────────────┼─────────┤
│getw(), putw() │ Thread safety │ MT-Safe │
└───────────────┴───────────────┴─────────┘
SVr4, SUSv2. Not present in POSIX.1.
The value returned on error is also a legitimate data value.
ferror(3) can be used to distinguish between the two cases.
ferror(3), fread(3), fwrite(3), getc(3), putc(3)
This page is part of release 4.12 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the
latest version of this page, can be found at
https://www.kernel.org/doc/man-pages/.
GNU 2016-03-15 GETW(3)